Question

which is a limitation of punnett squares? works well for comparing individuals, not populations unlimited number of combinations of crosses can be made can tell if a mutation is present

Explanation:

Punnett squares are mainly used to predict the genetic outcomes of individual crosses. They are not designed to handle large - scale population genetics. A Punnett square shows the possible combinations of alleles from two parents for a particular trait. When dealing with populations, factors like gene flow, genetic drift, and large - scale allele frequency changes come into play, which Punnett squares do not account for.
The claim about an "unlimited number of combinations of crosses" is incorrect. The number of combinations in a Punnett square is based on the number of alleles each parent can contribute. For example, if each parent has 2 alleles for a trait, a simple 2x2 Punnett square (4 combinations) is used.
Also, Punnett squares assume normal Mendelian inheritance and do not inherently detect mutations. Mutations are random changes in DNA that are not part of the standard allele - combination predictions of a Punnett square.

Answer:

works well for comparing individuals, not populations